No further details were provided on Rockefeller’s statements, which were given within minutes following the accident, according to the outlet. However, sources said that Rockefeller took a drug and alcohol test and neither were expected to be a factor.

DNAinfo’s report follows speculation as to what led to the derailment. National Transportation Safety Board spokesperson Earl Weener said brakes were engaged, but “very late in the game” at a press conference Monday, the outlet reported.